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Experimental analysis and modelling of mechanical properties and shrinkage of concrete recycling flash calcined dredging sediments
Van Bunderen, C.; Benboudjema, F.; Snellings, R.; Vandewalle, L.; Cizer, O. (2021). Experimental analysis and modelling of mechanical properties and shrinkage of concrete recycling flash calcined dredging sediments. Cement and Concrete Composites 115: 103787. https://hdl.handle.net/10.1016/j.cemconcomp.2020.103787
In: Cement and Concrete Composites. Elsevier: Barking. ISSN 0958-9465; e-ISSN 1873-393X, more
Peer reviewed article  

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Keyword
    Marine/Coastal
Author keywords
    Calcined dredging sediments; Mechanical properties; Autogenous shrinkage models; Drying shrinkage models

Authors  Top 
  • Van Bunderen, C., more
  • Benboudjema, F.
  • Snellings, R., more

Abstract
    This paper aims to assess the influence of calcined dredging sediments (CFC) from Antwerp port as a new SCM on the mechanical properties and shrinkage behaviour of concrete, where cement is replaced by 20, 30 and 40 wt% of CFC. Experimental results are compared with the current prediction models. CFC blended cement develops lower cumulative heat, compared to an OPC reference mix, resulting in a lower temperature development. Although the strength development of a CFC concrete mix is slower than that of an OPC reference mix, CFC concrete reaches higher compressive strength values after 28 days. Both autogenous and total shrinkage are reduced by using CFC blended cement. The development of the mechanical properties can be well described using the model from Eurocode 2, provided that the cement type dependent parameters were adjusted according to the new blended cement system. The existing shrinkage prediction models are also parametrised. All considered drying shrinkage models describe well the drying shrinkage development, while for autogenous shrinkage, the Bazant B4 model appears to be the best predictor. The results clearly support the use of CFC as a new SCM for the production of sustainable cement and concrete.

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